Wrench.



No. 871,690. 1 PATENTED NOV. 19, 1907.

F. GEHNER.

'WRENGH. APPLICATION FILED AUG. 6. 1907.

nrrsie PATENT @FFICE.

FRED GEHNER, OF GARRISON, NORTH DAKOTA.

WRENCH.

Specification of Letters Patent.

Patented Nov. 19 1907.

Application filed August 6. 1907. Serial No. 387.339.

T all whom it may concern:

Be it known that I, FRED GEHNER, a citizen of the. United States,residing at Garrison, in the county of McLean and State of North Dakota,have j invented a new and useful \(Vr'ench, of which the following is aspecification.

This invention relates to wrenches of that character known as ratchetwrenches and its object is to provide a simple, durableand efficientdevice of this character having means whereby the nut engaging portionof the wrench can be caused to rotate either to the right or to the leftwhen the handle is oscillated..

Another'objeet is to provide means whereby the head of the wrench can bereadily removed and another substituted therefor.

Another object is to provide simple means whereby either or both of theratchet engaging pawls can be held out of engagement with the ratchet.

With these and other objects in view the jnventionconsists of certainnovel features of construction and combinations of parts which will behereinafter more fully described and pointed out in the claims.

'In the accompanying drawings'is shown the preferred form of'theinvention. In said drawings: Figure 1 is a side elevation of a wrenchembodying the present imrovements. Fig. 2 is a front view thereof. Fig.3 is a section on line :c-ac, Fig. 1. Fig. 4 is a section on line yy,Fig. 2.

Referring to the figures by characters of reference, 1 designates thecylindrical headof the wrench the same having angular sockets 2 in theends thereof which may be of different proportions so as to fit nuts orbolt heads of different sizes. Extending around thecentral portion ofthehead are integral adjoining ratchets 3 and 4 the teeth of which areoppositely pitchedl These ratchets project beyond the periphery of thehead 1 and are designed to rotate between retaining lates 5v extendingfrom handle sections 6.

he head, 1 is revolubly mounted within these plates 5 and is heldagainst longitudinal -movement by the ratchets which bear against theinner or adjoining faces of the lates 5. The handle sections 6 aresimilar in construction and have fiat longitudinal faces designed to beheld in contact by means of transversely extending screws 7 or othersimilar fastening means. Sections 6 are reduced and rounded from pointsnear the centers thereof to their outer or free ends to form a grip 8whereb the wrench may be conveniently held. The diameter of the grip ismuch less than the thickness of the re;

maining portion of the handle sections and therefore the wrench can beheld close to a flat surface without cramping the fin ers holding thewrench or causing them tos 'de upon the surface. Each handle section hasa longitudinal bore 9 extending thercinto from between the lates 5 andlocated within these bores are sli able pawls 10 and 11 held normallyprojected into engagement with the respective ratchets by means ofsprings 12. Each of the pawls has a lug 13 outstanding therefrom anddesigned'to move within an angular or L-shaped slot 14 opening into thepawl. Each slot is so disposed that the shoulder 15 therein mayconstitute.

an abutment for the purpose ofengaging lug 13 and holding the pawlretracted. I

It is thou ht that the operation of the wrench will be fully understoodfrom the foregoing description. l/Vhenthe two pawls are in engagementwith their res ective ratchets the oscillation of the ban le will causea corresponding movement of the head 1. If, however, the pawl 10 shouldbe re tracted and the lug 13 thereof placeglyin enagement with shoulder15 the oscillation of the handle would cause the other pawl 11 to rotatethe head in one direction. This movement of the head can be reversed by,

releasing the pawl 10 and withdrawing the awl from engagement with itsratchet. t is designed to utilize a set of heads in con nection witheach wrench,'each head being.

designed to fit two sizes of nuts. Should it be desired to substitute ahead. for the one already in the wrench, the two handle'sections aredisconnected and a new 'head inserted within the plates 5 whereupon, by

ioo

one end thereof, the Wall of each bore having sitely pitched anddisposed to be engaged 10 an angular slot, a spring pressed pawl withinby the respective pawls.

the bore of each section, and an outstanding in testimony that I claimthe foregoing as portion u on each owl movable Within the my own, I havehereto affixed my signature I angular s 0t; of a lead re volubly mountedin the presence of two Witnesses.

within the plates, and integral retchets sur- FRED GEHNER. rounding thehead and interposed between Witnesses:

and bearing against the inner faces of the FREDRICK W. THORNE,

plates, the teeth of said ratohets being oppo- W. O. ANAOKER.

